enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Reflection (physics) - Wikipedia

    en.wikipedia.org/wiki/Reflection_(physics)

    Reflection of light is either specular (mirror-like) or diffuse (retaining the energy, but losing the image) depending on the nature of the interface.In specular reflection the phase of the reflected waves depends on the choice of the origin of coordinates, but the relative phase between s and p (TE and TM) polarizations is fixed by the properties of the media and of the interface between them.

  3. Reflection phase change - Wikipedia

    en.wikipedia.org/wiki/Reflection_phase_change

    Light waves change phase by 180° when they reflect from the surface of a medium with higher refractive index than that of the medium in which they are travelling. [1] A light wave travelling in air that is reflected by a glass barrier will undergo a 180° phase change, while light travelling in glass will not undergo a phase change if it is reflected by a boundary with air.

  4. Ultrasonic grating - Wikipedia

    en.wikipedia.org/wiki/Ultrasonic_grating

    These reflected waves are called echoes. The direct and reflected waves are superimposed, forming a standing wave. The density of the liquid at a node is more than the density at an antinode. Hence, the liquid acts as a diffraction grating to a parallel beam of light passed through the liquid at right angles to the wave.

  5. Parabolic reflector - Wikipedia

    en.wikipedia.org/wiki/Parabolic_reflector

    Conversely, a spherical wave generated by a point source placed in the focus is reflected into a plane wave propagating as a collimated beam along the axis. Parabolic reflectors are used to collect energy from a distant source (for example sound waves or incoming star light).

  6. Total internal reflection - Wikipedia

    en.wikipedia.org/wiki/Total_internal_reflection

    Although total internal reflection can occur with any kind of wave that can be said to have oblique incidence, including (e.g.) microwaves [1] and sound waves, [2] it is most familiar in the case of light waves. Total internal reflection of light can be demonstrated using a semicircular-cylindrical block of common glass or acrylic glass.

  7. Specular reflection - Wikipedia

    en.wikipedia.org/wiki/Specular_reflection

    Non-electromagnetic waves can also exhibit specular reflection, as in acoustic mirrors which reflect sound, and atomic mirrors, which reflect neutral atoms. For the efficient reflection of atoms from a solid-state mirror, very cold atoms and/or grazing incidence are used in order to provide significant quantum reflection ; ridged mirrors are ...

  8. Acousto-optic modulator - Wikipedia

    en.wikipedia.org/wiki/Acousto-optic_modulator

    The amount of light diffracted by the sound wave depends on the intensity of the sound. Hence, the intensity of the sound can be used to modulate the intensity of the light in the diffracted beam. Typically, the intensity that is diffracted into m = 0 order can be varied between 15% and 99% of the input light intensity.

  9. Attenuation - Wikipedia

    en.wikipedia.org/wiki/Attenuation

    The propagation of light through the core of an optical fiber is based on total internal reflection of the lightwave. Rough and irregular surfaces, even at the molecular level of the glass, can cause light rays to be reflected in many random directions.

  1. Related searches can sound waves be reflected in light fixtures

    can sound waves be reflected in light fixtures or personal property